... through forging press with the help of punch press, forging machine or other equipments, for instances, hot extrusion of watch case ... and motorcycle fittings, such as crankshaft, connecting rod, piston pin, chain wheel, aluminum wheel, valve, rock arm shaft, semi drive shaft ... hardware metal parts and machined parts, such as shaft, gear (chain wheel), cam, chuck and clamp etc.6. Quench for hardware ...